Forced Convection Heat Transfer from a Flat Plate between Array with Lateral Air Flow.(Dept.M)

Abstract

An experimental work on heat transfer by forced convection was conducted in order to study the heat transfer from hot rectangular tlat p late (155 x 115 mm) to an air stream. The hot place was situated between unheated p laces array at various locations in the flow direction. The air flow stream enters the tunnel ducc laterally from one side and from two sides. The study was mainly concerned with the effect of the lateral air flow on the average film coefficient of heat transfer . An exp erimental test rig was designed and constructed for chis investigation. The experiments covered the place locations of x = 12.5, 22.5, 32.5, 42.5 and 62.5 mm. and extended over a range of Reynolds number from about 6,800 to 109.000. Two correlations between the average Nusselt numoer and the Reynolds umbes were deduced, one was for the case of air entering the tunnel duct laterally from one side and the other was for the case of air entering the duco from two sides. The exp eriments were performed for the case of uniform heat flux. A comparison with the available work in the literature review was also made.